Improved machine for polishing marble



UNITED STATES PATENT OFFICE EDWIN PRICE AND ELIJAH B. PRICE, OF NORWALK, CONNECTICUT.

IMPROVED MACHINE FOR POLISHING MARBLE.

Specification forming part of Letters Patent No. 99,348, dated February 1, 1870.

To all 'whom it may concern Be it known that we, EDWIN PRICE and ELIJAH B. PRICE, of the town of Norwalk, county of Fairfield, and State of Connecticut, have invented a new and useful Improvement in the Construction of a Machine for Rubbing and Polishing Marble; and we do hereby declare that the following is a full and correct description thereof, reference being had to the accompanying drawing, and to the letters of reference marked thereon.

The nature of our invention consists in the arrangement of a transversely-traveling bed or platform, which receives the marble to be operated on by rubbing and polishing.

To enable others skilled in the art to make and use our invention, we will proceed to describe the same.

In the drawing, Figure l is a perspective view of the machine.

The object of our invention is to give a cross or transverse traveling movement to the bed or platform on which the marble is placed to be operated on by the rubbers and polishers, that move with a forward and backward action, by which means all parts of the surface, in width, of the marble will receive an equal and even portion of the rubbing or polishing, thereby avoiding the liability of being creased, which is often the case when rubbing lengthwise only. Our transverse movement, in combination with the longitudinal, obviatcs this entirely.

Weconstruct a frame, A, as shown in the drawing, Fig. l, to receive the different portions ofthe necessary machinery.

B is the transverse-traveling platform; C C, the horizontally-operating gear-wheels. D D are the two pit-men, which work on pins on the face of the gears, and the other ends work on pins xed to the under side of the platform B. This arrangement gives, when the gears C revolve, the transverse movement to the platform.

The gears C C are actuated by the revolving of the endless screw E', which receives its motion from the belt F, running over the main pulley G and pulley H. The shaft ofthe main pulley G runs on bearings to the pulley I, on the face of which is apin for the connectingrod K, which is attached to the vertical swinging or vibrating frame L. To this swinging frameL the rods M of the rubbing and polishing blocks N are connected, and which gives the longitudinal movement to them.

It will be observed that the one main belt F and pulleys give the combined longitudinal and transverse movement to the whole.

The platform B runs on grooved wheels attached to the under side and running upon angular ways fixed on the frame.

Power is communicated to the machine by a belt on the pulley O, or its equivalent.

What we claim as our invention, and desire to secure by Letters Patent, is-

The arrangement of the transversely-traveling bed B, in the manner and for the purpose substantially as herein described, moving in concert with the vibrating frame L and rubbers N N, Workinglongitudinally, as set forth, and actuated by the endless screw E horizontal gears C C, and pitmen D D, or their equivalents, as set forth and described.

EDWIN PRICE. E. B. PRICE. Witnesses:

WM. VINE, J. W. HUBBELL. 

